Susa Castle, also known as Acropolis, was built by French archaeologist Jacques de Morgan in 1912 on the historical hills, Acropol, near the tomb of Daniel as a residence for French archaeologists, excavating this ancient site. Its design is inspired by European middle-age castles and has some similarities to the French Bastille Prison.
Some very important items have been discovered through archaeological excavations here. Those include Hammurabi code and the Statue of Queen Napirasu, both currently on display in Louvre.
The castle has been built using the bricks from Apadana palace and some bricks from Chogha Zanbil with cuneiform inscriptions. There is a round tower on the north-eastern corner of the castle and a square one on the north-western corner.